base/profiler/scoped_tracker.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "base/profiler/scoped_tracker.h"
   6
   7 #include "base/bind.h"
   8
   9 namespace tracked_objects {
  10
  11 namespace {
  12
  13 ScopedProfile::Mode g_scoped_profile_mode = ScopedProfile::DISABLED;
  14
  15 // Executes |callback|, augmenting it with provided |location|.
  16 void ExecuteAndTrackCallback(const Location& location,
  17                              const base::Closure& callback) {
  18   ScopedProfile tracking_profile(location, ScopedProfile::ENABLED);
  19   callback.Run();
  20 }
  21
  22 }  // namespace
  23
  24 // static
  25 void ScopedTracker::Enable() {
  26   g_scoped_profile_mode = ScopedProfile::ENABLED;
  27 }
  28
  29 // static
  30 base::Closure ScopedTracker::TrackCallback(const Location& location,
  31                                            const base::Closure& callback) {
  32   if (g_scoped_profile_mode != ScopedProfile::ENABLED)
  33     return callback;
  34
  35   return base::Bind(ExecuteAndTrackCallback, location, callback);
  36 }
  37
  38 ScopedTracker::ScopedTracker(const Location& location)
  39     : scoped_profile_(location, g_scoped_profile_mode) {
  40 }
  41
  42 }  // namespace tracked_objects